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Environmental Engineering in CE

Environmental Engineering in CE
Methyl iso-cynate (MIC) gas (TLV <1 ppm), which caused Bhopal gas tragedy in 1984 falls under the category of __________ toxic gas.

Moderately
Highly
Very extremely
Extremely

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Environmental Engineering in CE
Presence of __________ bacteria in water causes disease like typhoid.

Anaerobic
Aerobic
Pathogenic
Non-pathogenic

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Environmental Engineering in CE
__________ is removed from water by lime-soda process.

Iron and manganese
Permanent hardness
Temporary hardness
Foul smell and taste

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Environmental Engineering in CE
What are the methods of treatment & disposal of radioactive wastes?

Biological methods & adsorption in ion exchange materials
Evaporation & chemical precipitation
All of these
Fixing into a solid mass with cement and sinking deep in the sea

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Environmental Engineering in CE
Noise pollution level in a chemical plant is expressed in

None of these
Roentgen
Hertz
Decibel

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Environmental Engineering in CE
Ozone level is generally found to be depleted in India in the month of

July
February
April
December

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